* ext/openssl/lib/openssl/ssl-internal.rb (OpenSSL::SSL#verify_certificate_identity):

shyouhei · shyouhei · commit 961bf7496ded · 2013-06-27T11:22:26.000Z
fix hostname verification. Patch by nahi.

	* test/openssl/test_ssl.rb (OpenSSL#test_verify_certificate_identity):
	  test for above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@41676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,11 @@
+Thu Jun 27 20:21:18 2013  URABE Shyouhei  <shyouhei@ruby-lang.org>
+
+	* ext/openssl/lib/openssl/ssl-internal.rb (OpenSSL::SSL#verify_certificate_identity):
+	  fix hostname verification. Patch by nahi.
+
+	* test/openssl/test_ssl.rb (OpenSSL#test_verify_certificate_identity):
+	  test for above.
+
 Sat May 18 23:34:50 2013  Kouhei Sutou  <kou@cozmixng.org>
 
 	* lib/rexml/document.rb: move entity_expansion_text_limit accessor to ...
diff --git a/ext/openssl/lib/openssl/ssl-internal.rb b/ext/openssl/lib/openssl/ssl-internal.rb
@@ -90,14 +90,22 @@ def verify_certificate_identity(cert, hostname)
       should_verify_common_name = true
       cert.extensions.each{|ext|
         next if ext.oid != "subjectAltName"
-        ext.value.split(/,\s+/).each{|general_name|
-          if /\ADNS:(.*)/ =~ general_name
+        id, ostr = OpenSSL::ASN1.decode(ext.to_der).value
+        sequence = OpenSSL::ASN1.decode(ostr.value)
+        sequence.value.each{|san|
+          case san.tag
+          when 2 # dNSName in GeneralName (RFC5280)
             should_verify_common_name = false
-            reg = Regexp.escape($1).gsub(/\\\*/, "[^.]+")
+            reg = Regexp.escape(san.value).gsub(/\\\*/, "[^.]+")
             return true if /\A#{reg}\z/i =~ hostname
-          elsif /\AIP Address:(.*)/ =~ general_name
+          when 7 # iPAddress in GeneralName (RFC5280)
             should_verify_common_name = false
-            return true if $1 == hostname
+            # follows GENERAL_NAME_print() in x509v3/v3_alt.c
+            if san.value.size == 4
+              return true if san.value.unpack('C*').join('.') == hostname
+            elsif san.value.size == 16
+              return true if san.value.unpack('n*').map { |e| sprintf("%X", e) }.join(':') == hostname
+            end
           end
         }
       }
diff --git a/test/openssl/test_ssl.rb b/test/openssl/test_ssl.rb
@@ -547,6 +547,29 @@ def test_unset_OP_ALL
       ssl.close
     }
   end
+ 
+  def test_verify_certificate_identity
+    # creating NULL byte SAN certificate
+    ef = OpenSSL::X509::ExtensionFactory.new
+    cert = OpenSSL::X509::Certificate.new
+    cert.subject = OpenSSL::X509::Name.parse "/DC=some/DC=site/CN=Some Site"
+    ext = ef.create_ext('subjectAltName', 'DNS:placeholder,IP:192.168.7.1,IP:13::17')
+    ext_asn1 = OpenSSL::ASN1.decode(ext.to_der)
+    san_list_der = ext_asn1.value.reduce(nil) { |memo,val| val.tag == 4 ? val.value : memo }
+    san_list_asn1 = OpenSSL::ASN1.decode(san_list_der)
+    san_list_asn1.value[0].value = 'www.example.com\0.evil.com'
+    ext_asn1.value[1].value = san_list_asn1.to_der
+    real_ext = OpenSSL::X509::Extension.new ext_asn1
+    cert.add_extension(real_ext)
+
+    assert_equal(false, OpenSSL::SSL.verify_certificate_identity(cert, 'www.example.com'))
+    assert_equal(true,  OpenSSL::SSL.verify_certificate_identity(cert, 'www.example.com\0.evil.com'))
+    assert_equal(false, OpenSSL::SSL.verify_certificate_identity(cert, '192.168.7.255'))
+    assert_equal(true,  OpenSSL::SSL.verify_certificate_identity(cert, '192.168.7.1'))
+    assert_equal(false, OpenSSL::SSL.verify_certificate_identity(cert, '13::17'))
+    assert_equal(true,  OpenSSL::SSL.verify_certificate_identity(cert, '13:0:0:0:0:0:0:17'))
+  end
+L
 end
 
 end
diff --git a/version.h b/version.h
@@ -1,15 +1,15 @@
 #define RUBY_VERSION "1.8.7"
-#define RUBY_RELEASE_DATE "2013-05-18"
+#define RUBY_RELEASE_DATE "2013-06-27"
 #define RUBY_VERSION_CODE 187
-#define RUBY_RELEASE_CODE 20130518
-#define RUBY_PATCHLEVEL 372
+#define RUBY_RELEASE_CODE 20130627
+#define RUBY_PATCHLEVEL 373
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 8
 #define RUBY_VERSION_TEENY 7
 #define RUBY_RELEASE_YEAR 2013
-#define RUBY_RELEASE_MONTH 5
-#define RUBY_RELEASE_DAY 18
+#define RUBY_RELEASE_MONTH 6
+#define RUBY_RELEASE_DAY 27
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];
